› firstname.lastname@example.org 
Your question form says to "try to be interesting." Hmm, performance anxiety ... and I'm only talking about sex!
My wife is very sensitive to tastes, and she gags on my pre-come. On the other hand, I really don't like the reduced sensation of using a condom during oral sex. So I was considering temporarily sealing my urethra with some of that "liquid bandage" stuff no mess for her, plenty of good feelings for me.
I have several concerns. This stuff is used on small cuts, so it should be safe, but are there any nasty solvents that would make it problematic? After it's dried, are there any risks if it's ingested? If it works, I hope to use it often, so how can it be removed without lasting damage?
Well, you succeeded. Your idea is interesting, and (this hardly ever happens) it is new. We oughtn't let the fact that it's also kind of crazy stop us from celebrating its novelty.
Dude. New-Skin contains alcohol and oil of cloves. Fingernail polish may dissolve it. It can, apparently, stain floors and countertops. It is labeled for external use only, of course, and also as not for use on "mucous materials." Is the inside of your urethra not a mucous material? My guess is this stuff will not permanently damage you but will hurt like hell and be difficult to remove if it gets inside. It's not designed to fill holes anyway, so it wouldn't even work.
Or did you mean the newer, higher-tech liquid bandage, the stuff that's basically Dermabond, a.k.a. superglue? Have you not thought through the ejaculation problem? How, exactly, do you expect this to work?
This leaves us with three possibilities: The spray-on latex condom, although offering many opportunities for hilarity, won't work, because it's supposed to cover your entire penis (you stick your dick in the can, I believe) and because it isn't on the market yet. Paint-on sex latex (google "liquid latex" or "deviant") is nontoxic and more or less meant to go naughty places but also is not meant as a gap filler not that your urethra is a gap, precisely, but you know what I mean. Plus, latex is meant to be kept out of body cavities.
Last up: using a regular condom but rolling it down to cover just the glans. This is probably your best bet. It's not creepy-cool like fake skin nor especially innovative, but it's also not likely to maim you or require dramatic and embarrassing medical intervention, which, if you think about it, is really the least we can ask of our marital aids.
I love having raspberries blown on my tummy you know, when the lips are placed against the tummy and then blown, causing a vibrating and tickling sensation. I've loved this ever since I was a child and also love doing it. I don't know how to bring it up with friends because I'm afraid they'll think I'm weird. I only like women to do it to me, not guys! Is this unusual?
Not at all. I know a number of people who are fond of the zerbert, at least one of whom can be instantly yanked out of the deepest, sloughiest slough of despond by the judicious application of sputtering lips to belly but they are all babies. The reason nobody talks about this is that it's something we do to entertain infants, like making faces or putting unusual objects on our heads. Few adults continue to laugh hysterically every time you put a stuffed pig on your head, and most would look askance at you for doing so.
Look, I don't think this is even sex it's just something you do with your body that isn't eating or excreting or sports, and we have trouble categorizing bodily acts that aren't sex and aren't any of those things either. We're just weird about bodies. Perhaps we should all try to get over that, but I wouldn't hold your breath.
All that aside, though, nobody wants to hear you talk about this. If you're lucky enough to find yourself frolicking naked with a likely female prospect, you can probably get away with it as a lighthearted, jokey thing, but do not bring it up over dinner, the way one might broach the topic of, say, S-M. People who wouldn't blink on hearing that you are fond of pain or sex parties or any other normal kink like that might never feel quite the same about you after hearing you wax rhapsodic about belly raspberries. Probably because of the association with babies, the only people whose shirts we are allowed, even encouraged, to yank up without prelude or permission to shmoozle their tummy-tum-tums, it just seems a little unseemly.
Andrea Nemerson has spent the last 14 years as a sex educator and an instructor of sex educators. In her previous life she was a prop designer. And she just gave birth to twins, so she's one bad mother of a sex adviser. Visit www.altsexcolumn.com  to view her previous columns.